# SDR 98ZZZM203

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 14, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N233US](https://openairdocs.org/aircraft/N233US), registered now
- Make and model: Boeing 737201
- Aircraft serial: 22273
- System (JASC): [7930 · Engine Oil Indicating System](https://openairdocs.org/jasc/7930)
- Part: Connector
- Part number: BACC63BN12C3S
- Condition: Dirty
- Location: Nr 1 Engine
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZM203

## Discrepancy

BOS - FLT 786 - CLIMBING OUT FROM BOS ABOUT 8,000 FEET, THE NR 1 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATED.  CREW SHUT DOWN THE NR 1 ENGINE, DECLARED AND EMERGENCY AND RETURNED TO FIELD AT BOS.  FLIGHT LANDED WITHOUT FURTHER INCIDENT.  TOTAL SINGLE ENGINE TIME WAS 10 MINUTES.  MAINTENANCE CHECKED THE NR 1 ENGINE OIL AND FILTER FOR CONTAMINATION.  CHECKED GOOD.  REMOVED AND REPLACED THE OIL FILTER BYPASS SWITCH AND CANNON PLUG.  LEAK CHECK AND OPERATIONAL CHECK GOOD.  (M)

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